Flexible packaging with internal release

Abstract

The invention comprises a package for reactive materials comprising a panel defining a first end, a second end opposite the first end, and at least two side edges. The panel comprises at least one film layer, an adhesive adjacent the film layer, wherein the adhesive is pattern applied such that it is disposed within an interior region of the film layer and wherein a perimeter of the film layer is adhesive-free adjacent each of the first end, second end, and side edges, and a release liner comprising a substrate layer and a cured silicone layer. The release liner is adhered to the film layer via the adhesive, the substrate layer of the release liner is disposed adjacent the film layer, and a perimeter of the release liner is smaller than the perimeter of the film structure. In an embodiment, the panel comprises a tubular body and the side edges are sealed together to form a fin seal, the first end is sealed closed to form an end seal, and the second end is sealed closed to form an end seal.

What is claimed is: 
     
       1. A blank for forming a package comprising:
 a panel defining a first end, a second end opposite the first end, and at least two side edges, wherein the panel comprises:
 at least one film layer; 
 an adhesive adjacent the film layer, wherein the adhesive is pattern applied within an interior region of the film layer and wherein a perimeter of the film layer is adhesive free adjacent each of the first end, second end, and side edges; 
 a release liner comprising a substrate layer and a cured silicone layer, 
 wherein the release liner is adhered to the film layer via the adhesive, 
 wherein the substrate layer of the release liner is disposed adjacent the film layer, and 
 wherein a perimeter of the release liner is smaller than the perimeter of the film layer. 
 
 
     
     
       2. The blank of  claim 1  wherein the at least one film layer comprises an outer layer adhered to a printable sealant. 
     
     
       3. The blank of  claim 2  wherein the outer layer and printable sealant are coextruded. 
     
     
       4. The blank of  claim 2  wherein the outer layer comprises biaxially oriented nylon. 
     
     
       5. The blank of  claim 2  wherein the printable sealant is print receptive. 
     
     
       6. The blank of  claim 2  wherein the printable sealant comprises polyethylene. 
     
     
       7. The blank of  claim 2  wherein the printable sealant is coextensive with the outer layer. 
     
     
       8. The blank of  claim 1  wherein the area between the perimeter of the film layer and the perimeter of the release liner comprises a seal area for forming a package. 
     
     
       9. The blank of  claim 1  wherein the perimeter of the release liner is substantially aligned with an outer perimeter of the adhesive. 
     
     
       10. The blank of  claim 1  wherein the substrate layer comprises polyethylene terephthalate. 
     
     
       11. A package for reactive materials comprising:
 a panel defining a first end, a second end opposite the first end, and at least two side edges, wherein the panel comprises:
 at least one film layer; 
 an adhesive adjacent the film layer, wherein the adhesive is pattern applied such that it is disposed within an interior region of the film layer and wherein a perimeter of the film layer is adhesive-free adjacent each of the first end, second end, and side edges; 
 a release liner comprising a substrate layer and a cured silicone layer, 
 wherein the release liner is adhered to the film layer via the adhesive, 
 wherein the substrate layer of the release liner is disposed adjacent the film layer, 
 wherein a perimeter of the release liner is smaller than the perimeter of the film structure, 
 wherein the panel comprises a tubular body, and 
 wherein the side edges are sealed together to form a fin seal, the first end is sealed closed to form an end seal, and the second end is sealed closed to form an end seal. 
 
 
     
     
       12. The package of  claim 11  wherein the at least one film layer comprises an outer layer adhered to a printable sealant. 
     
     
       13. The package of  claim 12  wherein the outer layer and printable sealant are coextruded. 
     
     
       14. The package of  claim 12  wherein the outer layer comprises biaxially oriented nylon. 
     
     
       15. The package of  claim 12  wherein the printable sealant is print receptive. 
     
     
       16. The package of  claim 12  wherein the printable sealant comprises polyethylene. 
     
     
       17. The package of  claim 12  wherein the printable sealant is coextensive with the outer layer. 
     
     
       18. The package of  claim 11  wherein the substrate layer comprises polyethylene terephthalate. 
     
     
       19. The package of  claim 11  wherein the package contains one or more reactive materials. 
     
     
       20. The package of  claim 11  wherein the area between the perimeter of the at least one film layer and the perimeter of the release liner comprises the fin seal and end seals. 
     
     
       21. The package of  claim 11  wherein the fin seal and end seals are adhesive-free.